<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        #l1 {
            color: red;
        }
        .c1 {
            color: green;
        }
        input[type='text'],body>p {
            background-color: yellow;
        }
        body>div>div>p {
            color: pink;
        }
        body div div p {
            background-color: blue;
        }
        a:link {color: green}
        a:visited {color: red}
        a:hover {color: yellow}
        a:active {color: purple}
    </style>
</head>
<body>
<ul>
    <li id="l1">刘备</li><li>关羽</li><li class="c1">张飞</li>
</ul>
<p>香蕉</p><p class="c1">苹果</p>

<input type="text">
<input type="password">

<div>
    <p>p1</p>
    <div><p>p2</p></div>
    <div>
        <div><p>p3</p></div>
    </div>
</div>
<a href="http://www.qq.com">腾讯</a>
</body>
</html>